Alumina Fiber Needle-punched Blanket

Product Introduction

Alumina fiber needle-punched blankets utilize an advanced sol-gel process to produce alumina fibers, which are then processed through a precisely controlled needling process. These fibers, primarily composed of Al₂O₃ and SiO₂, possess a dense internal structure and stable crystal morphology. The needling process significantly enhances the interweaving between the fibers, resulting in excellent delamination resistance, high tensile strength, and superior surface smoothness.

 

Alumina fiber needle-punched blankets exhibit exceptional thermal insulation performance at high temperatures, with strong structural stability, capable of withstanding extreme operating conditions and maintaining long-term reliability. This product not only offers excellent mechanical properties, but also outstanding energy efficiency and durability, making it widely used for thermal insulation in high-temperature industrial equipment.

 

Product Features

Excellent thermal stability

Excellent tensile strength

Low thermal conductivity

Low heat capacity

High thermal reflectivity

Excellent corrosion resistance

Excellent thermal strength

 

Product Applications

Industrial furnace linings: Serves as the core insulation layer of all-fiber linings for high-temperature melting furnaces, heat treatment furnaces, sintering furnaces, and other applications.

Aerospace thermal barriers: Used for thermal insulation and fire protection in engine compartments and high-temperature areas of aircraft.

Chemical equipment insulation: Encapsulates chemical pipelines and equipment such as cracking furnaces and converters, achieving high efficiency and energy savings.

Non-ferrous metals: Used for filtration, diversion troughs, and ladle insulation for molten metals such as aluminum and copper.

Ceramic sintering supports: Serves as kiln furniture, supporting ceramic blanks for high-temperature sintering, offering excellent thermal shock resistance.

Heat treatment equipment: Used in annealing furnaces, brazing furnaces, and other applications as flexible insulation components such as furnace door seals and furnace curtains.

Fire protection: Produces safety and protection products such as high-temperature fire blankets and fire escape insulation.

Laboratory high-temperature equipment: Provides lightweight internal insulation solutions for experimental equipment such as tube furnaces and box furnaces.

 

Product Parameters

 

Performance		Test method	Model 72
Al2O3:SiO2(%) Chemical structure		Chemical analysis	72:28
Mineral structure		XRD	δ-Al2O3/ γ-Al2O3/ Mullite
Classification temperature(℃)		GB/T 3003-2017	1600
Shot content(≥45 um)(%)		GB/T 5480-2017	0-2
LOI(%)		GB/T 32179-2015	0.1
Specific gravity(g/cm3)		GB/T 5071-2013	3.1
Average fiber diameter( μ m)		GB/T 5480-2017	5.5-7.5
Specific heat capacity (J/kg/K)		GB/T 19466.4-2016	1.17x103~1.21x103
Heat Shrinkage (%)	1400℃ x 24h	GB/T 17911	≤1
	1650℃ x 24h		≤1
Thermal conductivity	600℃	GB/T 17911	B.D.=100kg/m30.16	B.D.=130kg/m30.15	B.D.=150kg/m30.15
	1000℃		0.33	0.32	0.31
	1200℃		0.49	0.46	0.44

 

Product Certificate

 

Innovation-driven, energy-saving and efficiency-enhancing:

New high-performance alumina fiber needled blankets lead the high-temperature industrial revolution.

SUNTHERM, a leading domestic high-tech materials manufacturer, officially announced the full launch of its independently developed next-generation alumina fiber needled blankets. This revolutionary product, with its exceptional high-temperature resistance, extreme energy efficiency, and long service life, is designed to provide a benchmark solution for addressing thermal insulation challenges in high-temperature industries, contributing to the achievement of China's "dual carbon" strategy.

The alumina fiber needled blanket is a flexible refractory insulation material made primarily from high-strength alumina fiber, using an internationally advanced dry needling process and high-temperature heat treatment technology. Its uniform and fine fiber structure ensures stable overall performance, allowing for long-term operating temperatures from 1400-1500°C and enhanced transient heat resistance. Compared to traditional ceramic fiber blankets, it offers significant breakthroughs in thermal stability, slag corrosion resistance, and mechanical strength. Its extremely low thermal conductivity ensures unparalleled insulation, minimizing heat loss in industrial thermal equipment and increasing overall energy savings by 20% to 30%.

In addition to its exceptional energy-saving properties, this product also exhibits excellent thermal shock resistance, capable of withstanding intense rapid cooling and heating cycles without cracking or pulverizing, significantly extending the maintenance cycle and service life of the kiln lining. Furthermore, its flexible blanket structure is easy to cut, wind, and install, making it widely applicable within complex industrial equipment. This facilitates installation and significantly reduces overall application costs.

This new product targets a variety of high-end industrial applications. Typical applications include heating furnaces and soaking pits in the steel and metallurgical industry; melting furnaces and holding furnaces in the non-ferrous metals industry; roller hearth kilns and shuttle kilns in the ceramic and building materials industry; and large-scale cracking and reforming furnaces in the chemical industry. Furthermore, it demonstrates significant potential for application in emerging fields such as aerospace and thermal protection for new energy vehicle batteries.

"We are committed to promoting industrial energy conservation and consumption reduction through material innovation," said the General Manager of SUNTHERM. "The launch of this alumina fiber needle-punched blanket not only demonstrates our technological strength in high-temperature materials, but also hopes to become a reliable partner for our customers to enhance product competitiveness and achieve green transformation."

The product is currently available for bulk orders, with customized solutions also available.

 

Customer Visits

Packaging Display

 

 

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FAQ

Q1: How do you conduct quality control?

A1: SUNTHERM has a comprehensive quality management system that covers every production process, from the chemical composition of raw materials to the physical properties of finished products. All products undergo rigorous testing before shipment. Upon request, we can provide a quality inspection report with the shipment.

Q2: Are you a factory?

A2: Yes, we are. You are welcome to visit us at any time, and I will personally show you around our production line.

Q3: Do you provide free samples?

A3: We can provide free samples, but shipping costs are the responsibility of the buyer.

 

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